• Today

    Mar 1

    57°Lo 37°

    Partly sunny and warmer

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Mon

    Mar 2

    54°Lo 36°

    A passing shower or two

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Moderate
    more
  • Tue

    Mar 3

    59°Lo 37°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Moderate
    more
  • Wed

    Mar 4

    60°Lo 38°

    Plenty of sunshine

    Low ragweed pollen levels
    • Precip
      2%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      0%
    more
  • Thu

    Mar 5

    63°Lo 39°

    Sunshine

    Ragweed Pollen Weather
    • Precip
      3%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      3%
    more
Next Previous
Hi 57° RealFeel® 59° Precipitation 10%

Day

N

E

S

W

  • W 7 mph
  • Gusts: 16 mph

Partly sunny and warmer

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 37° RealFeel® 34° Precipitation 13%

Night

N

E

S

W

  • ESE 5 mph
  • Gusts: 7 mph

Clear to partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Grass Valley Pollen Levels - March 1

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - Mar 1

more Historical Weather Data >
  Today Normal Record 3/1/2014
High 57° 61° 73° (1986) 63°
Low 37° 42° 25° (1971) 46°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 11:20 of sunlight, then sets at 5:57 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:37 PM with 14:05 of moolight, then sets at 4:42 AM

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps